/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    usart.c
  * @brief   This file provides code for the configuration
  *          of the USART instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
#include "string.h"
#include "tim.h"
#define USART3_RXSIZE	1024	//一帧接收数据的最大值
#define USART3_TXSIZE	1024	//一帧发送数据的最大值
 
uint8_t usart3_rx_buf[USART3_RXSIZE];	//发送数据缓冲数组
uint8_t usart3_tx_buf[USART3_TXSIZE];	//接收数据缓冲数据

uint8_t usart6_rx_buf[64];	//发送数据缓冲数组
uint8_t usart6_tx_buf[64];	//接收数据缓冲数据

int usart6_cnt = 0;

UART_BUF usart3;			//串口结构体实体
uint8_t RxBuffer;		//接收数据中间变量

//uint8_t mfc_ins_buf[8] = {0x01,0x03,0x00,0x10,0x00,0x02,0xC5,0xCE};//读取流量计瞬时流量命令
//uint8_t mfc_cum_buf[8] = {0x01,0x03,0x00,0x1A,0x00,0x02,0xE5,0xCC};//读取流量计累积流量命令
//uint8_t mfc_data_buf[8];//流量计返回数组

/* USER CODE END 0 */

/* USART1 init function */

void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  LL_USART_InitTypeDef USART_InitStruct = {0};

  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_USART1);

  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
  /**USART1 GPIO Configuration
  PA9   ------> USART1_TX
  PA10   ------> USART1_RX
  */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_9;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = LL_GPIO_PIN_10;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USART1 interrupt Init */
  NVIC_SetPriority(USART1_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),2, 1));
  NVIC_EnableIRQ(USART1_IRQn);

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  USART_InitStruct.BaudRate = 115200;
  USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
  USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
  USART_InitStruct.Parity = LL_USART_PARITY_NONE;
  USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
  USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
  USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
  LL_USART_Init(USART1, &USART_InitStruct);
  LL_USART_ConfigAsyncMode(USART1);
  LL_USART_Enable(USART1);
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}
/* USART2 init function */

void MX_USART2_UART_Init(void)
{

  /* USER CODE BEGIN USART2_Init 0 */

  /* USER CODE END USART2_Init 0 */

  LL_USART_InitTypeDef USART_InitStruct = {0};

  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2);

  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOD);
  /**USART2 GPIO Configuration
  PD5   ------> USART2_TX
  PD6   ------> USART2_RX
  */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_5;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
  LL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = LL_GPIO_PIN_6;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
  LL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  /* USART2 DMA Init */

  /* USART2_TX Init */
  LL_DMA_SetChannelSelection(DMA1, LL_DMA_STREAM_6, LL_DMA_CHANNEL_4);

  LL_DMA_SetDataTransferDirection(DMA1, LL_DMA_STREAM_6, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);

  LL_DMA_SetStreamPriorityLevel(DMA1, LL_DMA_STREAM_6, LL_DMA_PRIORITY_LOW);

  LL_DMA_SetMode(DMA1, LL_DMA_STREAM_6, LL_DMA_MODE_CIRCULAR);

  LL_DMA_SetPeriphIncMode(DMA1, LL_DMA_STREAM_6, LL_DMA_PERIPH_NOINCREMENT);

  LL_DMA_SetMemoryIncMode(DMA1, LL_DMA_STREAM_6, LL_DMA_MEMORY_INCREMENT);

  LL_DMA_SetPeriphSize(DMA1, LL_DMA_STREAM_6, LL_DMA_PDATAALIGN_BYTE);

  LL_DMA_SetMemorySize(DMA1, LL_DMA_STREAM_6, LL_DMA_MDATAALIGN_BYTE);

  LL_DMA_DisableFifoMode(DMA1, LL_DMA_STREAM_6);

  /* USART2 interrupt Init */
  NVIC_SetPriority(USART2_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),2, 1));
  NVIC_EnableIRQ(USART2_IRQn);

  /* USER CODE BEGIN USART2_Init 1 */

  /* USER CODE END USART2_Init 1 */
  USART_InitStruct.BaudRate = 38400;
  USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
  USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
  USART_InitStruct.Parity = LL_USART_PARITY_NONE;
  USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
  USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
  USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
  LL_USART_Init(USART2, &USART_InitStruct);
  LL_USART_ConfigAsyncMode(USART2);
  LL_USART_Enable(USART2);
  /* USER CODE BEGIN USART2_Init 2 */
	uart2_init();
  /* USER CODE END USART2_Init 2 */

}
/* USART3 init function */

void MX_USART3_UART_Init(void)
{

  /* USER CODE BEGIN USART3_Init 0 */

  /* USER CODE END USART3_Init 0 */

  LL_USART_InitTypeDef USART_InitStruct = {0};

  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART3);

  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOD);
  /**USART3 GPIO Configuration
  PD8   ------> USART3_TX
  PD9   ------> USART3_RX
  */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_8;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
  LL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = LL_GPIO_PIN_9;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_7;
  LL_GPIO_Init(GPIOD, &GPIO_InitStruct);

  /* USART3 DMA Init */

  /* USART3_TX Init */
  LL_DMA_SetChannelSelection(DMA1, LL_DMA_STREAM_3, LL_DMA_CHANNEL_4);

  LL_DMA_SetDataTransferDirection(DMA1, LL_DMA_STREAM_3, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);

  LL_DMA_SetStreamPriorityLevel(DMA1, LL_DMA_STREAM_3, LL_DMA_PRIORITY_LOW);

  LL_DMA_SetMode(DMA1, LL_DMA_STREAM_3, LL_DMA_MODE_NORMAL);

  LL_DMA_SetPeriphIncMode(DMA1, LL_DMA_STREAM_3, LL_DMA_PERIPH_NOINCREMENT);

  LL_DMA_SetMemoryIncMode(DMA1, LL_DMA_STREAM_3, LL_DMA_MEMORY_INCREMENT);

  LL_DMA_SetPeriphSize(DMA1, LL_DMA_STREAM_3, LL_DMA_PDATAALIGN_BYTE);

  LL_DMA_SetMemorySize(DMA1, LL_DMA_STREAM_3, LL_DMA_MDATAALIGN_BYTE);

  LL_DMA_DisableFifoMode(DMA1, LL_DMA_STREAM_3);

  /* USART3 interrupt Init */
  NVIC_SetPriority(USART3_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 1));
  NVIC_EnableIRQ(USART3_IRQn);

  /* USER CODE BEGIN USART3_Init 1 */

  /* USER CODE END USART3_Init 1 */
  USART_InitStruct.BaudRate = 115200;
  USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
  USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
  USART_InitStruct.Parity = LL_USART_PARITY_NONE;
  USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
  USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
  USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
  LL_USART_Init(USART3, &USART_InitStruct);
  LL_USART_ConfigAsyncMode(USART3);
  LL_USART_Enable(USART3);
  /* USER CODE BEGIN USART3_Init 2 */
	/*发送配置*/
    //设置外设地址，因为这个是DMA串口发送，
    LL_DMA_SetPeriphAddress(DMA1,LL_DMA_STREAM_3,(uint32_t)&USART3->DR);
    //使能DMA串口发送
    LL_USART_EnableDMAReq_TX(USART3);
    //使能DMA2发送完成中断
    LL_DMA_EnableIT_TC(DMA1,LL_DMA_STREAM_3);
  /* USER CODE END USART3_Init 2 */

}
/* USART6 init function */

void MX_USART6_UART_Init(void)
{

  /* USER CODE BEGIN USART6_Init 0 */

  /* USER CODE END USART6_Init 0 */

  LL_USART_InitTypeDef USART_InitStruct = {0};

  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_USART6);

  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOC);
  /**USART6 GPIO Configuration
  PC6   ------> USART6_TX
  PC7   ------> USART6_RX
  */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_6;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_8;
  LL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = LL_GPIO_PIN_7;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_8;
  LL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  /* USART6 DMA Init */

  /* USART6_RX Init */
  LL_DMA_SetChannelSelection(DMA2, LL_DMA_STREAM_1, LL_DMA_CHANNEL_5);

  LL_DMA_SetDataTransferDirection(DMA2, LL_DMA_STREAM_1, LL_DMA_DIRECTION_PERIPH_TO_MEMORY);

  LL_DMA_SetStreamPriorityLevel(DMA2, LL_DMA_STREAM_1, LL_DMA_PRIORITY_LOW);

  LL_DMA_SetMode(DMA2, LL_DMA_STREAM_1, LL_DMA_MODE_CIRCULAR);

  LL_DMA_SetPeriphIncMode(DMA2, LL_DMA_STREAM_1, LL_DMA_PERIPH_NOINCREMENT);

  LL_DMA_SetMemoryIncMode(DMA2, LL_DMA_STREAM_1, LL_DMA_MEMORY_INCREMENT);

  LL_DMA_SetPeriphSize(DMA2, LL_DMA_STREAM_1, LL_DMA_PDATAALIGN_BYTE);

  LL_DMA_SetMemorySize(DMA2, LL_DMA_STREAM_1, LL_DMA_MDATAALIGN_BYTE);

  LL_DMA_DisableFifoMode(DMA2, LL_DMA_STREAM_1);

  /* USART6_TX Init */
  LL_DMA_SetChannelSelection(DMA2, LL_DMA_STREAM_6, LL_DMA_CHANNEL_5);

  LL_DMA_SetDataTransferDirection(DMA2, LL_DMA_STREAM_6, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);

  LL_DMA_SetStreamPriorityLevel(DMA2, LL_DMA_STREAM_6, LL_DMA_PRIORITY_LOW);

  LL_DMA_SetMode(DMA2, LL_DMA_STREAM_6, LL_DMA_MODE_CIRCULAR);

  LL_DMA_SetPeriphIncMode(DMA2, LL_DMA_STREAM_6, LL_DMA_PERIPH_NOINCREMENT);

  LL_DMA_SetMemoryIncMode(DMA2, LL_DMA_STREAM_6, LL_DMA_MEMORY_INCREMENT);

  LL_DMA_SetPeriphSize(DMA2, LL_DMA_STREAM_6, LL_DMA_PDATAALIGN_BYTE);

  LL_DMA_SetMemorySize(DMA2, LL_DMA_STREAM_6, LL_DMA_MDATAALIGN_BYTE);

  LL_DMA_DisableFifoMode(DMA2, LL_DMA_STREAM_6);

  /* USART6 interrupt Init */
  NVIC_SetPriority(USART6_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),2, 1));
  NVIC_EnableIRQ(USART6_IRQn);

  /* USER CODE BEGIN USART6_Init 1 */

  /* USER CODE END USART6_Init 1 */
  USART_InitStruct.BaudRate = 9600;
  USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
  USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
  USART_InitStruct.Parity = LL_USART_PARITY_NONE;
  USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
  USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
  USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
  LL_USART_Init(USART6, &USART_InitStruct);
  LL_USART_ConfigAsyncMode(USART6);
  LL_USART_Enable(USART6);
  /* USER CODE BEGIN USART6_Init 2 */
/*接收配置*/
    //使能空闲中断
    LL_USART_EnableIT_IDLE(USART6);
	
	/*发送配置*/
    //设置外设地址，因为这个是DMA串口发送，
    LL_DMA_SetPeriphAddress(DMA2,LL_DMA_STREAM_6,(uint32_t)&USART6->DR);
    //使能DMA串口发送
    LL_USART_EnableDMAReq_TX(USART6);
    //使能DMA2发送完成中断
    LL_DMA_EnableIT_TC(DMA2,LL_DMA_STREAM_6);
	
	LL_USART_EnableIT_RXNE(USART6);	//开启接收中断
  /* USER CODE END USART6_Init 2 */

}

/* USER CODE BEGIN 1 */
/*****************************重写回调函数，实现串口数据接收**********************/
void modbus_init(void)
{
	usart3.rx_buf = usart3_rx_buf;	//接收数据变量初始化
	usart3.rx_buf_cnt = 0;
	usart3.rx_size = 0;
	usart3.rx_flag = 0;
	
	usart3.tx_buf = usart3_rx_buf;	//发送数据变量初始化
	usart3.tx_buf_cnt = USART3_TXSIZE;
	usart3.tx_size = 0;		
	
	LL_USART_EnableIT_RXNE(USART3);	//开启接收中断
 
}

void modbus_callback(void)
{
	if(step_cnt >= 3)
	{
		if(usart3.rx_buf_cnt >= USART3_RXSIZE-1)	//接收数据量超限，错误
		{
			usart3.rx_buf_cnt = 0;
			memset(usart3.rx_buf, 0x00, sizeof(usart3.rx_buf));
			LL_USART_TransmitData8(USART3, 0xEE);		
		}
		else									//接收正常
		{
			RxBuffer = LL_USART_ReceiveData8(USART3);
			usart3.rx_buf[usart3.rx_buf_cnt++] = RxBuffer;	//接收数据存储到rx_buf
			LL_TIM_DisableCounter(TIM7);
			LL_TIM_SetCounter(TIM7,0);//将定时器7的计数值清零后重新计数
			LL_TIM_EnableCounter(TIM7);//TIM7计数使能
		}
	}
}


void modbus_send(USART_TypeDef *Luart,uint8_t *Tx_Buf,uint16_t Size)
{
	//配置内存地址
    LL_DMA_SetMemoryAddress(DMA1,LL_DMA_STREAM_3,(uint32_t)Tx_Buf);
    //配置数据长度
    LL_DMA_SetDataLength(DMA1,LL_DMA_STREAM_3,Size);
    //使能DMA STREAM  也就是发送数据
    LL_DMA_EnableStream(DMA1, LL_DMA_STREAM_3);
}


void usart2_laser_send(USART_TypeDef *Luart,uint8_t *Tx_Buf,uint16_t Size)
{
	//配置内存地址
    LL_DMA_SetMemoryAddress(DMA1,LL_DMA_STREAM_6,(uint32_t)Tx_Buf);
    //配置数据长度
    LL_DMA_SetDataLength(DMA1,LL_DMA_STREAM_6,Size);
    //使能DMA STREAM  也就是发送数据
    LL_DMA_EnableStream(DMA1, LL_DMA_STREAM_6);
//	LL_DMA_ConfigAddresses():
}

void usart6_send(uint8_t *Tx_Buf,uint16_t Size)
{
	//配置内存地址
    LL_DMA_SetMemoryAddress(DMA2,LL_DMA_STREAM_6,(uint32_t)Tx_Buf);
    //配置数据长度
    LL_DMA_SetDataLength(DMA2,LL_DMA_STREAM_6,Size);
    //使能DMA STREAM  也就是发送数据
    LL_DMA_EnableStream(DMA2, LL_DMA_STREAM_6);
}

 //串口接收中断回调函数，激光
void usart6_rx_cb(void)//uint8_t uart_index, uint8_t *data, uint16_t len
{
	
	// 空闲中断，表明接收到了1帧所有的数据
	if(LL_USART_IsActiveFlag_IDLE(USART6))
    {
    	//清除空闲中断
        LL_USART_ClearFlag_IDLE(USART6);
		usart6_cnt = 0;
		
    }
	
	// Rx非空中断，表明接收到了一个字节
    // 读取Rx可自动清除中断标志位
	if(LL_USART_IsActiveFlag_RXNE(USART6))
	{
        // 如果数组长度大于设置的data最大长度，直接停止接收
        if(usart6_cnt > 50)
              usart6_cnt = 0; // wait for the next data
	   usart6_rx_buf[usart6_cnt] = LL_USART_ReceiveData8(USART6);
	   usart6_cnt ++;
    }
}
/* USER CODE END 1 */